公开(公告)号：US20240026842A1

公开(公告)日：2024-01-25

申请号：US18344012

申请日：2023-06-29

Applicant: YAMABIKO CORPORATION

Inventor： Tamotsu SAITO ,  Tomoyoshi KUDO ,  Yuta ONUMA ,  Ryosuke IMAI

IPC: F02M19/04

CPC classification number: F02M19/04

Abstract: A flow control restrictor includes: a needle valve; and a limit cap which is made of metal and attached to the needle valve. In the needle valve, a first shaft portion which is made of metal and screwed into a regulation hole and a second shaft portion which is made of metal and housed inside the regulation hole are formed. On the second shaft portion, a first projection-and-recess portion is formed, and a pressed portion made of resin is provided on the first shaft portion side relative to the first projection-and-recess portion. The limit cap is fitted onto the second shaft portion. On the limit cap, a projecting portion which is inserted into a restriction groove of the regulation hole and a second projection-and-recess portion which is engaged with the first projection-and-recess portion are formed. The pressed portion is pressed against an inner peripheral surface of the limit cap.

公开(公告)号：US11293380B2

公开(公告)日：2022-04-05

申请号：US16887055

申请日：2020-05-29

Applicant: Walbro LLC

Inventor： Yoshiaki Doyama ,  Teruhiko Tobinai

IPC: F02M19/04 ,  F02M9/00 ,  F02M3/10 ,  F02M9/08 ,  F02M17/38 ,  F02M17/08

Abstract: In at least some implementations, a limiter cap assembly for a carburetor having a cavity in which one or more adjustable valves are received, includes a plug adapted to be received within a cavity of the carburetor and having an opening and a cavity aligned with the opening, a clasp engageable with the plug and having at least one retention feature and an opening aligned with the opening of the plug, and a limiter cap received within the opening of the plug and engaged with the retention feature of the clasp. Removal of the limiter cap from the plug opening is prevented by engagement of the retention feature with the limiter cap and by engagement of the clasp with the plug.

公开(公告)号：US11293379B1

公开(公告)日：2022-04-05

申请号：US17034559

申请日：2020-09-28

Applicant: Jiagang Liu

Inventor： Jiagang Liu

IPC: F02M9/10 ,  F02M3/10 ,  F02B63/02 ,  F02M19/04

Abstract: The present utility model relates to a carburetor with adjusting tool for garden machinery engine with anti-flow tampering function. The carburetor is comprised of a carburetor body, an idle oil needle, an oil needle spring, a plunger nut, a flow adjusting nail, a flow nail spring, a gasket and a sealing ring, wherein the idle oil needle and the flow adjusting nail are both provided with a special tool adjusting part, the special tool adjusting part is comprised of a section of cylinder, and the surface of the cylinder is provided with a micro wedge-shaped adjusting structure in the axial direction. In the present utility model, the flow and opening of the carburetor can only be adjusted using a special tool by changing the structure of the idle oil needle and the flow adjusting nail, which can effectively avoid the problem that the state of the carburetor is adjusted by users by using a common screwdriver, which causes the engine to fail to work normally or even be damaged due to improper adjustment, thus resulting in unnecessary after-sales service work, guaranteeing that the state as delivered is not easy to be freely adjusted by users, thus effectively ensuring the low emission value.

公开(公告)号：US11131272B2

公开(公告)日：2021-09-28

申请号：US16533876

申请日：2019-08-07

Applicant: Yamabiko Corporation

Inventor： Ikumin Ryuzaki ,  Takumi Nonaka ,  Tamotsu Saito ,  Tomoyoshi Kudo

IPC: F02M19/04 ,  F02M9/10 ,  F02M9/02 ,  F02M17/40 ,  B29C70/48

Abstract: A needle valve body (220) has a needle hollow part (230) and a slit (232) extending in an axial direction and opened forward in a tip region. The carburetor body (B) has a body hole (202) receiving the needle valve body (220) in a longitudinally displaceable manner along an axis and a step-part circumferential edge (240a) formed in the body hole (202) and forming an orifice (250) with the slit (232) of the needle valve body (220). By operating the needle valve body (220) to adjust the size of the orifice (250), an amount of fuel supplied to a fuel discharge part (Fout) can be adjusted.

公开(公告)号：US20170130678A1

公开(公告)日：2017-05-11

申请号：US15337717

申请日：2016-10-28

Applicant: Walbro LLC

Inventor： GEORGE M. PATTULLO

IPC: F02M9/08 ,  F02M19/01 ,  B01F3/04 ,  F02M19/04

CPC classification number: F02M9/08 ,  B01F3/0446 ,  B01F2215/0088 ,  B25B13/48 ,  B25B23/103 ,  B25B23/105 ,  B25B27/0035 ,  F02M19/01 ,  F02M19/04

Abstract: A carburetor with a fuel adjustment tamperproof valve assembly and specialized tools for adjusting the valve assembly. A needle valve is received in a recess in a carburetor body with a passage open to the exterior of the body and a cylindrical surface of the passage. A valve head with a cylindrical exterior surface is received in the passage with a slight clearance between them. The specialized tools are engageable with the head to adjust the valve by rotating it.

公开(公告)号：US20170122262A1

公开(公告)日：2017-05-04

申请号：US14991070

申请日：2016-01-08

Applicant: Meiying XUE

Inventor： Meiying XUE

IPC: F02M3/10 ,  F02M19/04 ,  F02M9/08

CPC classification number: F02M3/10 ,  F02M7/06 ,  F02M9/08 ,  F02M17/04 ,  F02M19/04

Abstract: An anti-adjusting rotary valve type carburetor includes a high speed adjustment oil needle having an eccentric hole and an idle adjustment oil needle having an eccentric hole. Also disclosed is a specialized adjustment tool having an eccentric convex platform for adjusting the high speed adjustment oil needle and the idle adjustment oil needle. Also disclosed is a high speed adjustment oil needle having an eccentric convex platform and an idle speed adjustment oil needle having an eccentric convex platform. Also disclosed is a specialized adjustment tool having an eccentric hole for adjusting the high speed adjustment oil needle and the idle speed adjustment oil needle.

公开(公告)号：US08348244B2

公开(公告)日：2013-01-08

申请号：US12843008

申请日：2010-07-24

Applicant: Tetsuji Kojima ,  Hidenori Sasaki ,  Masashi Sasaki ,  Hitoshi Terakado

Inventor： Tetsuji Kojima ,  Hidenori Sasaki ,  Masashi Sasaki ,  Hitoshi Terakado

IPC: F02M19/04

CPC classification number: F02M7/12 ,  F02M7/18 ,  Y10T137/7062

Abstract: A carburetor valve and limiter cap assembly for limiting adjustment of fuel flow in a carburetor may include a needle valve and a limiter cap. The needle valve may have a tip, a threaded portion, a head having a flange with an outer diameter greater than the rest of the head, and one or more serrations formed on the head. The limiter cap may have a sidewall, a tab extending outwardly from the sidewall, a first cavity having an inner diameter sized for an interference fit with the flange, and at least one driving feature to engage at least one serration so that rotation of the limiter cap causes rotation of the needle valve. The interference fit between the flange and the limiter cap inhibits removal of the limiter cap from the needle valve to prevent undesired adjustment of the needle valves by an end user.

Abstract translation: 用于限制化油器中燃料流量调节的化油器阀和限制器盖组件可包括针阀和限位盖。 针阀可以具有尖端，螺纹部分，具有外径大于头部的其余部分的凸缘的头部，以及形成在头部上的一个或多个锯齿。 所述限制器帽可具有侧壁，从所述侧壁向外延伸的突出部，具有尺寸适于与所述凸缘过盈配合的内径的第一腔，以及至少一个驱动特征，以使所述限制器 帽引起针阀旋转。 法兰和限位器帽之间的过盈配合禁止从针阀上移除限制器帽，以防止最终用户对针阀的不期望的调整。

公开(公告)号：US20120146250A1

公开(公告)日：2012-06-14

申请号：US13074038

申请日：2011-03-29

Applicant: Joachim Baumhauer ,  Alexander Kraus ,  Yoshiharu Iwasa ,  Daisuke Suzuki

Inventor： Joachim Baumhauer ,  Alexander Kraus ,  Yoshiharu Iwasa ,  Daisuke Suzuki

IPC: F02M3/08 ,  F02M19/04

CPC classification number: F02M19/04 ,  F02M3/02 ,  F02M3/10 ,  Y10T137/7062 ,  Y10T137/7065

Abstract: An adjustment safeguard for a set screw that is rotatably held in a housing has a cap that is non-rotatably secured on the head of the set screw. The cap is received in a sleeve of the housing and surrounded with minimal radial play by the sleeve that is essentially coaxially positioned relative to the cap. The cap is received with its axial length in the sleeve. The cap has a projection and the sleeve has a stop arranged in the interior of the sleeve. Projection and stop interact with each other in a rotational direction of the set screw. The cap has a top part and a separate bottom part. The bottom part is secured axially and non-rotatably on the head of the set screw. The bottom part engages with form fit the top part in the rotational direction and is axially connected to the top part.

Abstract translation: 可旋转地保持在壳体中的定位螺钉的调节保护具有不可旋转地固定在固定螺钉的头部上的盖。 盖被容纳在壳体的套筒中并且被套筒的最小径向游隙包围，该套筒基本上相对于盖子同轴地定位。 盖子的轴向长度被套在套筒中。 盖具有突起，并且套筒具有布置在套筒内部的止挡件。 投影和停止在固定螺丝的旋转方向上彼此相互作用。 盖具有顶部和单独的底部。 底部部分被固定在固定螺钉的头部上并且不可旋转地固定。 底部与旋转方向上的顶部接合，并且轴向连接到顶部。

公开(公告)号：US07097164B2

公开(公告)日：2006-08-29

申请号：US11050018

申请日：2005-02-02

Applicant: Christian Vick ,  Carsten Ziegs

Inventor： Christian Vick ,  Carsten Ziegs

IPC: F02M19/04

CPC classification number: F02M3/08 ,  F02M19/04 ,  F02M2003/105 ,  Y10S261/38 ,  Y10S261/84 ,  Y10T137/7062

Abstract: In order to improve a limiter cap (300; 300′) for limiting the adjustability of at least two set screws or valves (200), which are arranged side by side, with each set screw or valve (200) including at least one retaining nose or stop leg (240), extending in the transition area between the screw head (210) and the screw needle or valve needle (220) in a ring shape around the external circumference of the screw needle or valve needle (220), in particular for limiting the adjustment of the fuel flow through a carburetor (400; 400′), in such a way that inadvertently pushing the limiter cap onto the screw needle thus prematurely blocking said screw needle, already at the time when the (basic) carburetor adjustment takes place, is safely prevented, it is proposed that the limiting cap (300; 300′) is attached to each of the set screws (200) in particular in a way so as to be self-attaching, and/or in particular such that the limiter caps (300; 300′) engage each other with locking action, and/or without any further auxiliary means or without any further supplementary part.

Abstract translation: 为了改进用于限制并排布置的至少两个定位螺钉或阀（200）的可调节性的限制器盖（300; 300'），每个固定螺钉或阀（200）包括至少一个保持 鼻部或止动腿（240），其围绕螺杆针或阀针（220）的外周围以环形方式在螺钉头（210）和螺纹针或阀针（220）之间的过渡区域中延伸， 特别是用于限制通过化油器（400; 400'）的燃料流量的调节，使得在（基本）化油器时，已经在（基本）化油器时，无意中将限制器盖推到螺丝针上，从而过早地阻塞所述螺纹针 安全地防止了调节，建议将限制盖（300; 300'）特别地以固定的方式附接到每个固定螺钉（200），以便自身附着，和/或特别地 使得限制器盖（300; 300'）彼此接合wi 和/或没有任何进一步的辅助装置或没有任何其他辅助部件。

公开(公告)号：US6003845A

公开(公告)日：1999-12-21

申请号：US46909

申请日：1998-03-24

Applicant: Dale P. Kus

Inventor： Dale P. Kus

IPC: F02M19/04 ,  F02M19/01 ,  F02M3/10

CPC classification number: F02M19/01 ,  Y10S261/38 ,  Y10S261/84 ,  Y10T137/7062

Abstract: A fuel mixture adjusting and limiting device for a carburetor has a body received in a bore of the carburetor and defining a fuel passage through which liquid fuel is supplied to the high and/or low speed system of the carburetor, an inlet opening in the body through which fuel enters the fuel passage from a metering chamber of the carburetor and a metering pin slidably carried by the body and capable of at least partially restricting the flow of fuel through the inlet opening to control the flow rate of fuel through the body. An adjustment screw threadably received in the bore of the carburetor is rotatable to axially displace the adjustment screw and during at least a portion of the axial range of movement of the adjustment screw, the adjustment screw bears on the metering pin to axially displace the metering pin and thereby control the flow area of the inlet opening. Preferably, the adjustment screw carries an adjustment pin which is axially displaceable relative to the adjustment screw and constructed to engage the metering pin to displace it. The axial location of the adjustment pin relative to the adjustment screw can be varied to alter the relationship between the adjustment screw and the metering pin.

Abstract translation: 用于化油器的燃料混合物调节和限制装置具有容纳在化油器的孔中的主体并且限定燃料通道，液体燃料通过该燃料通道供应到化油器的高速和/或低速系统，体内的入口开口 通过该燃料，燃料从化油器的计量室进入燃料通道，计量销可由主体可滑动地承载，并且能够至少部分地限制通过入口的燃料的流动，以控制通过本体的燃料的流量。 螺纹地接纳在化油器的孔中的调节螺钉可旋转以轴向移动调节螺钉，并且在调节螺钉的轴向运动范围的至少一部分期间，调节​​螺钉承载在计量销上以轴向移动计量销 从而控制入口开口的流动面积。 优选地，调节螺钉承载调节销，该调节销相对于调节螺钉可轴向移动并且构造成接合计量销以使其移位。 可以改变调节销相对于调节螺钉的轴向位置，以改变调节螺钉和计量销之间的关系。